//
// Created by 51165 on 2025/10/17.
//
#include <stdio.h>
int main() {
    int n = 0;
    scanf("%d", &n);
    switch (n%3) {
        case 0:
            printf("整数，余数为0\n");
            break;
        case 1:
            printf("余数是1\n");
            break;
        case 2:
            printf("余数是2\n");
            break;
        }
    return 0;
}
